William hinds



UNITED STATES PATENT OFFICE.

WILLIAM HINDS, OF COOIERSTOVVN, NEWV YORK.

VISE SAW-SET.

Specication of Letters Patent No. 8,185, dated July 1, 1851.

To all whom t may concern:

Be it known that I, WILLIAM HINDS, of Otsego, in the county of Otsego and State otl New York, have invented a new and useful Machine for Setting and Filing Saws, which I denominate the Vise Saw-Set; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawing, making a part of this specification, in which the drawing is a perspective view of the said saw-set.

A, B, and C represent the arms; D and E, the jaws; F, the cross bar and stake; G, the bevel, and H the lever.

The vise, or main body of the set, is composed of two pieces of cast iron, and when put together in the machine for use it is very similar in form to that of a common blacksmiths vise. The only point or part wherein it differs very materially from the blacksmiths vise is that it has two arms on one side of it (A and B, of the drawing). The arm (A) is fast and permanent in its place, while that of (B) is fast. at the bottom only and movable at top, and the grip or compression of the vise is effected by means of an eccentric lever that turns on the upper end of the arm (A,) and operates directly against the jaw (D) to force that jaw against the other. One piece of the cast iron that goes to make the body of the vise embodies in one entire piece, the jaw (E), the two arms (C and A) and the cross bar and stake at the bottom marked (F) on the drawing. rI`he other piece of cast iron embodies the jaw marked (D) and the arm (B) which has ears that pass by on each side of the arm Through these ears and the bottom of the arm (A) is a bolt inserted that may be readily taken out to adjust the bevel in the jaw in its several positions for setting as may be seen by the drawing. The most convenient length for the jaws would be about nine and one-half inches, in order to set or tile the largest hand saw at three moves in the vise, and the arms should be of sufficient length to receive the widest hand saw. At each end on opposite corners and in the inside of the jaw (E) are knobs to hold the bevel in its place in the jaw. Also on the inside of the arm (C) and exactly where it connects with the jaw (E) is a knob to prevent the bevel from springing back while setting. The inside faces of the jaws should be made with a slight curve or circle, so thatI the ends of the jaws will come in contact Hrst. The curves in the aws may be equal to what the jaws will spring in producing the necessary power of compression. The arm should be made thin and light, so that the whole face of the jaw embodied with it, and the bevel may readily be brought into full contact with the saw blade by the force of the lever. On the outside of the jaw (D) equidistant from the ends of the jaw is a notch or gap that circles nearl around the top of the arm (A) to hold the jaws in the right position with each other (all ot' which may be seen from the drawing). The bevel (G) or setting bar should be made of steel of the same length of the jaws of the vise with four different inclined planes or beveled squares on the edges thereof, so as to set saws four different widths. The planes or beveled squares should be made with a slight round, or curve on the inside edges to give the saw teeth a longer bend and render them less liable to break. The opposite corners at each end of the bevel are cut out to make a tenon to lit in between the knobs mentioned on one jaw of the vise. The bevel should be so adjusted in the vise that the front' side of the jaw (D) will come exactly over the inside edges of the inclined planes or beveled squares. At the bottom of the vise is a stake or bar projecting downward for the purpose of being placed in a hole in a bench or other place to hold the vise in an upright position to le in. The eccentric lever (H) is so common and so clearly shown in the drawing as to need no description.

To set saws in this set, care must be taken to let no more than the length of the teeth to any saws extend outside of the jaw (D), nor in any case to let the points of the teeth eX- tend over the edges of the bevel, otherwise in either case the teeth may be broken. The saws are set with a punch and hammer, and iled as in any ordinary vise.

)Vhat constitutes the advantages in this kind of vise which are not to be found combined in ordinary vises to be used in setting or filing saws, or in any kind of vise heretofore used for that purpose, are: first, that it has no cross screw or other obstructing devices between the arms, thereby rendering any longer length of arms than will be equal to the width of the saw blade unnecessary, consequently making the construction of the vise cheaper', lighter, smaller, and more compact and portable; second, another advantage is secured by the use of the light arm (B) which readily yields to the power of the lever and surfers the full face of the jaw (D) and bevel to be brought into full contact with the saw blade, thereby producing a sufficient amount of friction to hold the polished blades irm in the vise; third, a further advantage arises from the arrangement o the notch in the jaw (D) which fits close to the arm (A) and serves to keep the jaws in perfect. correspondence With each other.

)Vhat I claim as my invention and Wish to secure by Letters Patent is,

Constructing a vise for the purpose of compressing saws to be set or tiled in the following manner, namely: with only one supporting arm to each jaw, hinged at their lower extremities and having an extra arm on one side of and parallel or nearly so to said supporting arms, to the upper eX- tremity of which is attached an eccentric lever or its mechanical equivalent for compressing the two jaws together, constructed substantially as herein described.

WILLIAM HINDS.

)Vitnesses G. W. ERNST, HYDE CLARK. 

